Program overview
Public Security Audio-Visual Technology, simply put, teaches you how to use video, audio, and images—these "electronic eyes and ears"—to crack cases. You'll learn how to identify suspects from surveillance footage, analyze whether a recording is fake, and sharpen blurry photos. Core courses include video image processing, speech signal processing, digital forensics, crime scene investigation techniques, plus a bit of programming and machine learning. China has a unique edge in this field due to its vast network of surveillance cameras, with public security departments accumulating rich practical experience. Many universities (such as People's Public Security University of China) have labs that work directly on real cases, giving you access to cutting-edge investigative techniques. It's perfect for students who are tech-savvy, have a sense of justice, and enjoy solving puzzles—if you love detective dramas and tinkering with computers, this major will be right up your alley.